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Less Chemicals and More Power: Pulsed Electric Field-Treatment for Reduction of Microorganisms

Preiss, Philipp; Bohem, Monika Eva; Frey, Wolfgang; Dekold, Stefan; Gusbeth, Christian; Herzog, Dennis; Sack, Martin; Schwartz, Thomas; Lang-Koetz, Claus; Poboss, Norman

Abstract (englisch):

Decisions on the implementation of innovative concepts and technologies into automotive pre-treatment lines are regularly marked by uncertainty regarding trade-offs between economic, ecological and technical aspects. Large amounts of water are consumed during the production in car body painting plants. It is hardly possible to avoid that certain microorganisms (MOs) proliferate in process water and pre-treatment bath tanks. If the bacterial load increases too much, the quality of the paint finish is likely to be impaired. Therefore, chemical biocides are regularly used in pre-treatment and dip coating plants. However, repeated use of the same biocides can lead to resistance of some MOs strains. In addition, stricter legislation is gradually withdrawing certain biocides from the market, making it more difficult to obtain approval for newly designed active substances. Hence, conventional decontamination methods might no longer work in the future. The Pulsed Electric Field (PEF)-Treatment is an innovative technology within the field of pre-treatment lines. By applying high voltage pulses (kV range, µs duration), a high field strength is generated in the process fluid, across the cell membrane of the MOs, which permeabilises the cell membrane. ... mehr

Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Institut für Hochleistungsimpuls- und Mikrowellentechnik (IHM)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2021
Sprache Englisch
Identifikator ISBN: 978-3-662-62961-1
KITopen-ID: 1000141176
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Erschienen in Advances in Automotive Production Technology – Theory and Application. Hrsg.: Dr. Philipp Weißgraeber, Dr. Frieder Heieck, Dr. Clemens Ackermann
Veranstaltung Stuttgart Conference on Automotive Production (SCAP 2020), Online, 09.11.2020 – 10.11.2020
Verlag Springer Berlin Heidelberg
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